JP2009002584A - Electric carpet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric carpet, indicating the operating condition such as on/off state of a power supply with good visibility. <P>SOLUTION: This electric carpet includes: a carpet body 2 where a heater wire 9 is disposed; a control means 3 for controlling application of an electric current to the heater wire 9; a case 4 housing the control means 3 inside and fitted to a part of the peripheral edge part of the carpet body 2; a light guide plate 5 fixed to an area outside of the edge of the carpet body 2 in the case 4; and a light source 6 disposed at the side of the light guide plate 5. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electric carpet capable of showing an operating state such as power ON / OFF with good visibility.

  Conventionally, as an electric carpet, for example, a control unit for controlling energization to the heating element is attached to a corner portion of a main body having a heating element that generates heat by energization, and the control unit is configured to control the energization to the heating element. An electric carpet is known in which a knob is formed in an inverted L shape having an upper surface portion and a side surface portion in which the operation position of the operation knob can be confirmed from the upper surface and side surface directions of the control unit (Patent Document 1). reference).

Also, the power supply part of the electric carpet has a switch with a built-in pilot lamp and a power cord, and when the power switch is turned on, the pilot lamp inside the switch lights up and the switch becomes bright and displayed. It is also known that the user is informed that power is being supplied during lighting, and that the user forgets to turn off the power when not in use (see Patent Document 2).
Japanese Utility Model Publication No. 59-172913 (Fig. 2) Japanese Utility Model Publication No. 63-168725 (FIG. 1)

  By the way, in use, the skin cover body is covered with the top surface of the carpet body having the heating element. Usually, the skin cover body is approximately the same size as the carpet body. Therefore, the conventional electric carpet has a problem that it is difficult to fully recognize the position of the operation knob of the control unit and the lighting state of the lamp. there were. That is, in order to check the position of the operation knob and the lighting state of the lamp, it is necessary to go close to the control unit or look into it or turn off the skin cover body that covers the control unit. There has been a problem that the visibility of the display unit or the like showing is poor.

  The present invention has been made in view of such a technical background, and an object thereof is to provide an electric carpet capable of displaying an operating state such as power ON / OFF with high visibility.

  In order to achieve the above object, the present invention provides the following means.

[1] A carpet body provided with a heater wire,
Control means for controlling energization to the heater wire;
A case in which the control means is housed inside and attached to a part of the peripheral edge of the carpet body;
A light guide plate fixed to a region protruding outward from the edge of the carpet body in the case;
A light source disposed inside the case and disposed at a lateral position of the light guide plate;
An electric carpet comprising:

[2] A slide switch recess is formed in a region protruding outward from the edge of the carpet body on the upper surface of the case, and the light guide plate is disposed on the bottom surface of the recess,
2. The electric carpet according to claim 1, wherein a temperature control slide switch is slidably disposed on the light guide plate in the slide switch recess.

  [3] The light guide plate is made of acrylic resin, and the light guide plate is partitioned so as to be separated from the internal space of the case by a flame retardant or self-extinguishing resin partition member. Electric carpet.

  In the invention of [1], since the light guide plate is fixed to a region protruding outward from the edge of the carpet body in the case, and the light source is disposed at a side position of the light guide plate, For example, if the light source is turned on when the power is turned on and turned off when the power is turned off, the entire light guide plate is illuminated when the power is turned on, whereas the entire light guide plate is not illuminated when the power is turned off. Even in a state where the cover body is put on the carpet body, the operation state such as power ON / OFF can be displayed with good visibility. In particular, since the entire light guide plate shines instead of lighting with a point light source, the operating state of the electric carpet can be easily confirmed even from a distance, and the visibility is excellent. In addition, it is preferable that the said light-guide plate is an area | region which protruded outward from the edge of the carpet main body in the said case, and is fixed to the upper surface or outer peripheral surface of a case.

  In the invention of [2], the temperature control slide switch is slidably disposed on the light guide plate in the slide switch recess on the upper surface of the case. Since the temperature control slide switch is positioned above, the position of the temperature control slide switch becomes very easy to understand. For example, whether the temperature control slide switch is in the low temperature setting region or in the high temperature setting region. It is possible to easily confirm the isothermal control state even from a distance.

  In the invention of [3], since the light guide plate made of acrylic resin is separated from the internal space of the case by a flame retardant or self-extinguishing resin partition member, safety is achieved. Can be secured sufficiently.

  One embodiment of the electric carpet (1) according to the present invention is shown in FIGS. 1 and 2, (2) is a carpet body, (3) is a control means, (4) is a case, (5) is a light guide plate, and (6) is a light source.

  The carpet body (2) is made of a rectangular fabric sheet having a heater wire (9) disposed therein.

  A case (4) is fixed to one corner of the carpet body (2). The case (4) has a substantially rectangular shape in plan view, and has a substantially box shape as a whole. As shown in FIGS. 1 and 2, a part of the case (4) is fixed to the carpet body (2) so as to protrude outward from the edge of the carpet body (2). . The case (4) includes a case bottom body (22) and an upper lid body (21) that can be fitted to the bottom body (22) from above (see FIG. 5).

  Control means (3) is housed inside the case (4). That is, a circuit board (27) is disposed in an internal space formed by the case bottom body (22) and the upper lid body (21), and the outer side (the carpet body side) of the circuit board (27) The first display lamp (31), the second display lamp (32), the third display lamp (33), the contact switch (34), the temperature control slider (35), and the light source (6) at the edge of the opposite side Is attached (see FIG. 5). In the present embodiment, an LED (light emitting diode) is used as the light source (6), but is not particularly limited thereto. The control means (3) includes a circuit board (27), a contact switch (34), and a temperature control slider (35).

  A cut-out portion (21a) having a belt-like shape in plan view is formed along an edge of the upper lid (21) on the outer side (opposite to the carpet body) (see FIG. 5). In addition, a flame retardant resin partition member (26) having a substantially L-shaped cross section is disposed on the outer edge (opposite to the carpet body side) of the case bottom body (22). (See FIGS. 3 and 5). The partition member (26) includes a substantially rectangular bottom plate and a substantially rectangular side plate extending upward from the edge of the bottom plate (see FIGS. 3 and 5). Thus, the edge of the carpet body (2) on the upper surface of the case (4) when the case (4) is configured by fitting the upper lid (21) to the case bottom body (22) from above. Further, a slide switch recess (10) is formed in a region protruding outward (see FIG. 2). The light guide plate (5) is partitioned by the flame retardant resin partition member (26) so as to be isolated from the internal space of the case (4) (see FIGS. 3 and 5). A through hole (26a) is formed at one end of the bottom plate of the flame retardant resin partition member (26) in the length direction (see FIG. 5). Instead of the flame-retardant resin partition member, a self-extinguishing resin partition member may be used.

  A light guide plate (5) is fixed on the bottom surface of the slide switch recess (10) of the case (4) (see FIGS. 2 to 5). That is, the light guide plate (5) is fixed at a position visible from the outside in the case (4). The light guide plate (5) has a strip shape, and is arranged so that the length direction of the light guide plate (5) is substantially parallel to the edge of the case (4). A through hole (5a) is formed at one end of the light guide plate (5) in the length direction (see FIG. 5). In the present embodiment, the light guide plate (5) placed on the bottom plate of the flame retardant resin partition member (26) has a side surface (50) on the outer side (opposite the carpet body side). Is arranged so as to protrude outward from the side surface of the partition member (26) on the outer side (opposite to the carpet body side), that is, outside the side surface portion of the case (4). It arrange | positions so that it may protrude toward the direction (refer FIG. 3). In this embodiment, although the said light-guide plate (5) is a structure which consists of acrylic resin, it is not limited to the structure which consists of such resin especially.

  In the state where the light guide plate (5) is fixed on the bottom surface of the slide switch recess (10) of the case (4), the light source (6) fixed to the circuit board (27) is as shown in FIG. The flame retardant resin partition member (26) is disposed so as to face the through hole (5a) of the light guide plate (5) through the through hole (26a). That is, the light source (6) is disposed at a lateral position on the side surface on one end side in the length direction of the light guide plate (5), and at least part of the light of the light source (6) is transmitted to the light guide plate (5). It is comprised so that it may inject into the inside of a light-guide plate (5) from the side surface of the one end side of this length direction. Further, a light shielding sheet (13) is fixed to a region substantially corresponding to the through hole (5a) on the upper surface of the light guide plate (5) (see FIGS. 4 and 5), thereby releasing the light from the light source (6). The light that falls is incident on the side surface of the light guide plate (5) efficiently.

  An area switching switch (12) and a temperature control slide switch (11) are disposed on the light guide plate (5) in the slide switch recess (10) of the case (4) (see FIGS. 2 to 4). ). The area switching switch (12) is arranged such that its rear end is close to the contact switch (34) fixed to the circuit board (27). Further, the area switching switch (12) cannot move in the left-right direction in FIG. 4, and can move slightly in the front-rear direction in FIG. When the area switching switch (12) is pressed, the rear end of the area switching switch (12) is brought into contact with the contact switch (34) to switch the switch. In the present embodiment, the initial setting state is a state where all of the first to third display lamps (31), (32), and (33) are lit, and the power saving mode setting and the left and right (all areas) heating settings are set. However, each time the area switching switch (12) is pressed once, the setting is sequentially switched to the next second setting state, the third setting state, and the fourth setting state. . The second setting state is a state in which the first display lamp (31) is turned off and the second display lamp (32) and the third display lamp (33) are turned on. Both sides (all areas) are heated. The third setting state is a state in which the first display lamp (31) and the second display lamp (32) are turned off and the third display lamp (33) is turned on. Area non-heating setting, right area heating setting. The fourth setting state is a state in which the first display lamp (31) and the third display lamp (33) are turned off and the second display lamp (32) is turned on. The area heating setting and the right area non-heating setting are set (see FIG. 6).

  The rear end of the temperature control slide switch (11) is connected and fixed to a temperature control slider (35) disposed on the circuit board (27) (see FIG. 5). Therefore, when the temperature control slide switch (11) is slid in the left direction in FIG. 4, the high temperature heating setting is set, while when the temperature control slide switch (11) is slid in the right direction in FIG. 4, the low temperature heating setting is controlled. . In this way, the temperature can be adjusted in accordance with the slide movement of the temperature control slide switch (11). Further, when the temperature control slide switch (11) is slid to the rightmost position in FIG. 4, the power is turned off. That is, the control means (3) controls the energization / non-energization of the heater wire (9) and the energization amount at the time of energization corresponding to the operation state (slide position) of the temperature control slide switch (11). (See FIG. 6).

  In addition, when the temperature control slide switch (11) is at the rightmost position (that is, in a power-off state), the control means (3) stops energization of the light source (6) and turns on the light source ( 6) is turned off (see FIG. 6). Accordingly, at this time, the entire light guide plate (5) is not illuminated. On the other hand, the control means (3) energizes the light source (6) when the temperature control slide switch (11) is in a position slid to the left (that is, in a power-on state). The light source (6) is turned on. Accordingly, at this time, the entire surface of the light guide plate (5) is lit. In the present embodiment, since the blue LED is used as the light source (6), the entire surface of the light guide plate (5) is lit in blue.

  In the electric carpet (1) according to the above configuration, the light guide plate (5) provided with the light source (6) at the lateral position is in a region protruding outward from the edge of the carpet body (2) in the case (4). Since the entire surface of the light guide plate (5) shines when the power is on and the power is on, the entire surface of the light guide plate (5) does not shine when the power is off, so that the skin cover is placed on the carpet body (2). Even in such a state, the operating state such as power ON / OFF can be displayed with good visibility. In particular, since the entire light guide plate (5) shines instead of lighting with a point light source, the operating state of the electric carpet can be easily confirmed even from a distance, and the visibility is excellent. Further, since the light guide plate (5) shines on the surface in this way, when the power supply of the electric carpet (1) is ON when the room light is turned off at bedtime, the entire light guide plate (5) shines. This makes it easy for the user to notice this, so that it is possible to prevent forgetting to turn off the electric carpet (1).

  Further, the temperature control slide switch (11) is slidably disposed on the light guide plate (5) in the slide switch recess (10) on the upper surface of the case (4). Since the temperature control slide switch (11) is positioned on the light guide plate (5) where the light is shining, the position of the temperature control slide switch (11) becomes very easy to understand. Whether the slide switch (11) is in the low temperature setting region or the high temperature setting region, the temperature control state can be easily confirmed even from a distance.

  Moreover, in the said embodiment, since the side surface (50) of the outer side (opposite side to the carpet main body side) of the light guide plate (5) is exposed, when the light guide plate (5) is shining, (50) can also be seen in a shining state, but since the shining state of the side surface (50) of such a light guide plate (5) can be easily confirmed even from a further distance, There is an advantage that the visibility of the state can be further improved.

  In the above embodiment, there are only two settings in which the entire surface of the light guide plate (5) shines in the power-on state and the entire surface of the light guide plate (5) does not shine in the power-off state. For example, the temperature control slide switch can be obtained by using, for example, three kinds (three colors) of LEDs having different colors or a single LED having a variable color as the light source (6). The entire surface of the light guide plate (5) may be illuminated in blue when (11) is in the low temperature setting area, orange when in the middle temperature setting area, and red when in the high temperature setting area. In other words, as the temperature control slide switch (11) is slid from the right side to the left side, the entire surface of the light guide plate (5) may be changed in color sequentially from blue, orange and red. good. By adopting such a configuration, it is possible to confirm the temperature control state only by looking at the light color of the light guide plate (5) without looking at the position of the temperature control slide switch (11).

1 is a perspective view showing an embodiment of an electric carpet according to the present invention. It is a perspective view which shows a case and its vicinity. It is sectional drawing of the XX line in FIG. It is a front view of the case which notches and shows a part. It is a perspective view shown in the state where a case was separated into constituent members (details of a circuit of a circuit board are omitted). It is a block diagram of a control mechanism.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Electric carpet 2 ... Carpet main body 3 ... Control means 4 ... Case 5 ... Light guide plate 6 ... Light source 9 ... Heater wire 10 ... Slide switch recess 11 ... Temperature control slide switch 26 ... Partition member

Claims (3)

A carpet body provided with a heater wire;
Control means for controlling energization to the heater wire;
A case in which the control means is housed inside and attached to a part of the peripheral edge of the carpet body;
A light guide plate fixed to a region protruding outward from the edge of the carpet body in the case;
A light source disposed inside the case and disposed at a lateral position of the light guide plate;
An electric carpet comprising: A recess for a slide switch is formed in a region protruding outward from the edge of the carpet body on the upper surface of the case, and the light guide plate is disposed on the bottom surface of the recess,
2. The electric carpet according to claim 1, wherein a temperature control slide switch is slidably disposed on the light guide plate in the slide switch recess.   The electric light guide according to claim 1 or 2, wherein the light guide plate is made of an acrylic resin, and the light guide plate is partitioned so as to be separated from the internal space of the case by a flame retardant or self-extinguishing resin partition member. carpet.

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